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<meta charset="UTF-8">
<title>Insert title here</title>
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<body>
<a>超链接1</a>
<a href="http://www.tmooc.cn">超链接2</a>
<a href="demo01.html">超链接3</a>
<a href="../imgs/2.gif">超链接4</a>
<a href="http://doc.tedu.cn">
  <img src="../imgs/2.gif">
</a>
</body>
</html>